OFFSET
1,1
COMMENTS
Row 2 of A223599.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) + 3*a(n-2) - 42*a(n-3) - 8*a(n-4) + 48*a(n-5) for n>6.
Empirical g.f.: 16*x*(16 - 80*x - 50*x^2 + 481*x^3 + 40*x^4 - 456*x^5) / ((1 + 2*x)*(1 - 8*x + 13*x^2 + 16*x^3 - 24*x^4)). - Colin Barker, Aug 21 2018
EXAMPLE
Some solutions for n=3:
..2..3..4...11..3..4....0..8.14...15..7..0...15..9..1....3..4..3....9.15..7
.11..3..2....4..3..4...10..8.10....0..7..0...11..9.15....5..4..5...13.15..9
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 23 2013
STATUS
approved